31103312122211 has 8 divisors (see below), whose sum is σ = 37092148617984. Its totient is φ = 25500852174600.

The previous prime is 31103312122151. The next prime is 31103312122213. The reversal of 31103312122211 is 11222121330113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31103312122211 - 2¹⁸ = 31103311860067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103312122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96594136865 + ... + 96594137186.

It is an arithmetic number, because the mean of its divisors is an integer number (4636518577248).

Almost surely, 2^{31103312122211} is an apocalyptic number.

31103312122211 is a deficient number, since it is larger than the sum of its proper divisors (5988836495773).

31103312122211 is a wasteful number, since it uses less digits than its factorization.

31103312122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193188274081.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31103312122211 its reverse (11222121330113), we get a palindrome (42325433452324).

The spelling of 31103312122211 in words is "thirty-one trillion, one hundred three billion, three hundred twelve million, one hundred twenty-two thousand, two hundred eleven".